The required exit stairway enclosures shall be separated by a distance not less than 30 feet (91 440 mm) or one-fourth of the length of the maximum overall diagonal dimension of the building or area to be served, whichever is less. The distance shall be measured in a straight line between the nearest points of the exit stairway enclosures. In buildings with three or more exit stairway enclosures, at least two of the exit stairway enclosures shall comply with this section. Stairs sharing any common wall, floors, ceilings, scissor stair assemblies, or other enclosures shall be counted as one exit stairway.
Exception: Group R-2 occupancies.
Exception: Group R-2 occupancies.